DataSource Controls :: Filtering Between 2 Values In A Query From Dropdownlist Select?
Feb 17, 2010
I have dropdownlist of dates and depending on the date that the user selects from list, I would like to filter records that fall between the startyear and finishyear columns in the datasource. (My the problem is that I do not know how to declare the Startyear and Endyear from the query in the code as they appear underlined - probably the BETWEEN syntax is wrong too).
yYear = DropDownList1.Text
Using connection As New SqlConnection("Data Source=CHRIS-PCSQLEXPRESS;Initial Catalog=TorGHL;Integrated Security=True")
Dim cmd As String
cmd = "SELECT BarDetails.*, MenuHeadingId AS Expr1 FROM BarDetails WHERE (MenuHeadingId = 2)" & "WHERE " & yYear & " BETWEEN " & "(" &
StartYear & ")" & " AND " & "(" & EndYear & ")"
connection.Open()
Dim dapubcb As New SqlDataAdapterDim sqlcomm
As
New SqlCommand(cmd, connection)
dapubcb.SelectCommand = sqlcomm
Dim dspubcb As New DataSet("BarDetails")
dapubcb.Fill(dspubcb, "BarDetails")
I am having difficulty selecting data from 2 tables that do no share a primary key value. For instance, I have an actual table, a forecast table, and a GLText table. I may have an actual value but not a forecast value but I need them to appear in the same Query (like the query results shown below). I can get all values to appear in each table but have been unsuccessful in getting all values from both tables.
I have a table called 'Customer' that contains customer information. One of the fields is named "CustomerType". Each record in the 'Customer' table will contain the value of either "C", "I", or "O".
I have a form that contains a "check box list" named "Type". There are 3 values in the "check box list". The values are "C", "I", and "O". The user can select one or more of these values. I have a button on the form named "btnRunQuery.
When the user clicks on the button "btnRunQuery" I want to exectute a query that selects the records contained in the "Customer" table where the value in the field "CustomerType" equal the values the user selected in the "check box list". Example: If the user selected "C" and "O", then I want the select query to select all records that contain either "C" or "O" in the field "CustomerType".
I assume that what I need to do is to capture the values that the user selected in the "check box list" and put them in a variable. Then I need to format the "Where" statement in the query and add a "Parameters.AddWithValue" command.
i am using gridview control and a linqdatasource and its all working fine and i have added the functionlity of searchingBySubject and i added WhereParameters and than binding my gridview (see the code below) but somehow its not returning any rows and i see i have number of rows based on what i am searching.
I have a standard gridview, with the standard paging and sorting interface enabled.The application holds appointments for three organisational units, with a maximum of 3000 appointment records being returned across all three units. The appointment records are quite small.
The choice I am faced with is to:
1. Have an Org Unit dropdown which returns to the datasource on change of selection and at inital databind, and returns appointment records for one org unit at a time i.e. approx 1000 records.
2. Have the objectdatasource return all 3000 appointment records for all org units at initial databind, and filter the objectdatasource by org unit on change of selection, thereby saving a trip to the datasource.
I guess the question boils down to identifying the point at which querying the datasource by org unit is more efficient than filtering the records returned by org unit.
Is 3000 records a lot for a gridview to be paging and sorting etc.
in DataBase Attendancedate is save in this format 4/5/2010 4:16:28 PM ..i want to query like this select * from EmployeeAttendance where Attendancedate='4/5/2010' but this giv error
I have an application that I am developing using ASP.Net with visual basic code. I have a table called "Customers" that contains 3 fields. The name of each field is "Name", "LocationA", and "LocationB". I want to code a select query that list two columns. The first column should contain the field "Name". I want the second column to contain the value in the field "LocationB" if "LocationB" is not null, else I want the second column to contain the value in the field "LocationA".
Trying to use a dropdownlist to query a database so that it will return all values except 1 (or more in future versions).
For example, assume you had a simple table name "MYFRIENDS" which has two fields named "GROUP" and "NAME" with the following records:
Group Name A John B Jane C Tony D Sue
What I want to do is create a DropDownList that has only 2 list items related to the "GROUP" field. The first list item should return records from the database related to Group A only. Then, the second list item should return all other records EXCLUDING those belonging to Group A.
The drop down list should look something like this (I've put a question mark where I don't know what to do):
[Code]....
After the selection is chosen in the above drop down list, it should query the database and return the desired result. I'm using an AccessDataSource with select parameters. Here's a sample of what that looks like:
[Code]....
Things I've tried that didn't work:
I tried using "Not A" as the the 2nd list item's value. I was thinking p1 would be replaced with the value "Not A" and the query would read "WHERE GROUP LIKE Not A". But, the query syntax "Like Not" is technically wrong. I tried changing the Where Clause to "WHERE GROUP p1" and then replaced the list item's value to "LIKE A" and the second to "NOT LIKE A". Again, I was thinking p1 would be replaced to read "WHERE GROUP LIKE A" and "WHERE GROUP NOT LIKE A". I also tried changing the "SelectCommand" itself so that after the dropdownlist changed, it would first change the selectcommand first and then run the query.
Why the first 2 items didn't work became somewhat obvious to me after thinking about it for a little while. However, I would think the 3rd one would/should work... as long as you have the sequence of events correct which up to this point I haven't been able to figure out.
Trying to add another 2nd dropdownlist to Query String... Below This Query String works Perfectly:
Query = String.Format("SELECT {0} FROM {1} WHERE NACategory = '{2}' ORDER BY {3}", PrimaryKeyColumn, TableName, DDLCategory.SelectedItem.Text, SetSorting()) I've tried to add a 2nd DDLSubCategory.SelectedItem.Text - But its throwing and error message. Exception of type System.StackOverflowException was thrown. Query = String.Format("SELECT {0} FROM {1} WHERE NACategory = '{2}' AND NASubCategory = '{3}' ORDER BY {4}", PrimaryKeyColumn, TableName, DDLCategory.SelectedItem.Text, DDLSubCategory.SelectedItem.Text, SetSorting()) Can Someone take a look I'm not sure how to write (add) 2nd DropdownList (DDLSubCategory.SelectedItem.Text)
if I have three Dropdownlist A, B, C, how can I write a select statement to get data from sql server based on the dropdownlist selected.e.g. if user select dropdownlist A, select * from table where A = dropdownlist A but if user select dropdownlist A and C, then select statment is "select * from table where A = dropdownlist A and B = dropdownlist B or if selected A, B, C.......how can I settle so many choice.
I have a basic CMS which I'm adding to a site to display some downloads organised into groups. I have two tables, one for the groups and one for the downloads. I'm using a repeated to display the groups with another repeater inside to display the children. This works perfectly.
However some of my download groups may not have any downloads related to them and I'd like to handle this by filter the groups so that only those with a relate download record(s) are shown.
I'm trying to do this with the query which populates the top repeater based on some ideas I read but I must be going wrong with the syntax.
Here is what I'm using to try and only select downloads groups which have downloads linked to them by the download group ID.
[Code]....
Can anyone offer any thoughts on how I should construct the query to perform this?
I have a select statement in a stored procedure and want to be able to retrieve the key column value (PRODUCTID)and return it as Output when Select statement is executed on input Parameter (NAME).
addition, return two further output values (COST,TOTAL).
note the grid control expects to receive all values at once! so i need to get out these values at the same instance of execution.
Select productID,COST,QUANTITY,NAME,TOTAL,DATE FROM PRODUCTS WHERE NAME=@NAME
SELECT ClientMaster.ClientName,* FROM ProjectMaster LEFT JOIN ClientMaster ON ProjectMaster.ClientCode=ClientMaster.ClientCode WHERE ProjectMaster.RefCode IN (@refcode) AND ProjectMaster.ProjectStatus=@status
@refcode should be able to contain multiple values but how should I pass value to the parameterized query?
I have tried many ways such as @refcode = 'VALUE1','VALUE2', @refcode = VALUE1,VALUE2 but to no avail?
This code works just fine for me to select * from x,y,z. However what I want to do is retrieve the values return and assign them to variables. How do I go about this?
I have stored procedure which selects records from an SQL table based on a bunch of user-input parameters.Just discovered that if a record in the table has null values in some of the columns (I haven't figured out which ones yet), then the SELECT is not returning the record (even if it satisfies all the parameters).The SELECT statement is supposed to allow for nulls, and I've been over it a bunch of times and am not sure what I'm doing wrong.Or do I need to get rid of all the null values in the SQL table, and prevent new ones from being introduced?
